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SubjectRe: 2.6.20-rc4-mm1: PCI=n: drivers/net/3c59x.c compile error
On Mon, 26 Feb 2007 16:22:27 +0300 Sergei Shtylyov wrote:

> Hello, I wrote:
>
> >>>> 3x59x-fix-pci-resource-management.patch causes the following compile
> >>>> error with CONFIG_PCI=n:
>
> >>>> <-- snip -->
>
> >>>> ...
> >>>> CC drivers/net/3c59x.o
> >>>> /home/bunk/linux/kernel-2.6/linux-2.6.20-rc4-mm1/drivers/net/3c59x.c:
> >>>> In function 'vortex_init_one':
> >>>> /home/bunk/linux/kernel-2.6/linux-2.6.20-rc4-mm1/drivers/net/3c59x.c:961:
> >>>> error: implicit declaration of function 'pci_request_regions'
> >>>> /home/bunk/linux/kernel-2.6/linux-2.6.20-rc4-mm1/drivers/net/3c59x.c:985:
> >>>> error: implicit declaration of function 'pci_release_regions'
> >>>> make[3]: *** [drivers/net/3c59x.o] Error 1
>
> >>> Grr, at at the same time it's happy with pci_enable_device().
> >>> I'd say the problem is in <linux/pci.h>, not in the patch.
>
> >> Has there been any patch to fix the "unbalanced"
> >> pci_{request|release}_regions() declarations? Am I suposed to create
> >> such?
>
> > Alternatively, vortex_{init|remove_one() and struct pci_driver there
> > could have been put under #ifdef CONFIG_PCI (good idea anyway -- should
> > reduce driver size on non-PCI systems)...
>
> I wonder if I may count on any feedback on this -- asking linux-pci now...
> The issue is as follows: with my patch pci_{request|release}_regions() may
> be called with CONFIG_PCI=n (probably, this never has been a issue before) but
> <linux/pci.h> don't have them declared in this case -- unlike
> pci_enable_device() which is just empty for CONFIG_PCI=n.
> Now, what kind of approach do I take:
>
> - a "fair one", so that pci_{request|release}_regions() get "balanced"
> declarations in the header like pci_enable_device();
>
> - a "local one" (and even saving non-PCI kernel from needless bloat), i.e.
> #ifdef out functions that are only meaningful with CONFIG_PCI=y)?
>
> I'm leaning to the second now...

I'd prefer the fair one -- add stubs to include/linux/pci.h.

---
~Randy
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